Fix the condition to enable registerCleaner

It should only be enabled when both track_system_ui_context_before_wms
and clean_up_window_context_with_cleaner are enabled.

Also add @DisabledOnRavenwood tag to #testSystemUiContextCleanUp to prevent it from running in Ravenwood.

Test: atest WindowContextTest ContextTest
Flag: com.android.window.flags.clean_up_window_context_with_cleaner
Bug: 339727951
Bug: 410675385
Change-Id: I9730affbc9ebaf41d326e91a219fd3ba31fc4b95